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Bug 1605125
| Summary: | Fedora 28 - Kernel should not be built with POWER7_CPU=y and CPU_LITTLE_ENDIAN=y | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | IBM Bug Proxy <bugproxy> |
| Component: | kernel | Assignee: | Dan Horák <dan> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | rawhide | CC: | airlied, bskeggs, dan, ewk, hannsj_uhl, hdegoede, ichavero, itamar, jarodwilson, jglisse, jkachuck, john.j5live, jonathan, josef, kernel-maint, linville, mchehab, mjg59, steved |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | ppc64le | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-08-03 15:17:19 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1071880 | ||
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Description
IBM Bug Proxy
2018-07-20 08:50:16 UTC
== Comment: #0 - Sandipan Das <sadas034.com> - 2018-07-06 02:13:41 == Little-endian mode is officially supported for POWER8 and newer only. There are some other kernel build configuration options such as HAVE_EFFICIENT_UNALIGNED_ACCESS that depend on having POWER7_CPU=n when CPU_LITTLE_ENDIAN=y. This can cause failures in certain cases such as the TEST_BPF runtime tests. fyi ... as an example: $ grep CONFIG_POWER ./lib/modules/4.17.6-200.fc28.ppc64le/config CONFIG_POWER7_CPU=y # CONFIG_POWER8_CPU is not set # CONFIG_POWER9_CPU is not set RHEL kernels are fine. They set CONFIG_POWER8_CPU=y. it's now part of https://src.fedoraproject.org/rpms/kernel/pull-request/16 |